What does unbundling the traffic card mean?

Cancel account. The registered mobile phone account is bound to the data card number, and unbinding it is equivalent to logging out of the account. There are two types of data cards. One is the same card as a mobile phone card. It has a monthly fee, a phone bill, and can make calls and send text messages. The second type is the pure traffic card mentioned on the Internet, which is also the so-called IoT card. There is no monthly fee for the IoT card, and you cannot make calls or send text messages. But the only advantage is that the data is much cheaper than mobile phone cards.